Recently had an issue where a "chain" of electrical systems are not working. My problem is, I can't find the appropriate fuse location (which I believe to be the issue)

This "chain" of failed electrical systems includes the porch/step light (along entry), mid-galley light, fresh/grey/black water level indicators (at front), center console switches (interior fans, interior/map lights, etc). All failed at the same time. 

Have checked the bedroom breaker switches, fuses to the left of steering wheel (under cover), and fuses in the engine compartment (under hood) without luck. 

Any suggestions on issue or where to paste this question?

Thanks!